Largest West Nile virus outbreak in U.S. county recorded in Arizona: CDC

LOS ANGELES, April 27 (Xinhua) -- The largest recorded West Nile virus (WNV) outbreak in a U.S. county occurred in Maricopa County, Arizona, in 2021, according to a new report published by the U.S. Centers for Disease Control and Prevention (CDC) on Thursday.

In 2021, Maricopa County experienced the fifth, and largest, WNV outbreak reported in the county, with 1,487 cases, 1,014 hospitalizations, and 101 deaths. The number of cases was more than four times that reported in the previous largest outbreak.